The XTR and Dura-Ace RT-MT900 Brake Rotor by Shimano - Optimised in every respect

The Shimano RT-MT900 brake rotor was designed and developed on the basis of the successful Ice Tech FREEZA rotors. In the 140 mm and 160 mm versions, which are aimed particularly at road bike and cross-country riders, a weight reduction of 5 and 10 g respectively has been achieved. The 180 mm and 203 mm versions, specially designed for Enduro riders, are characterised by further improved heat dissipation and are, of course, also weight-optimised.

Guidelines for Replacing E-bike Components:

Before you replace components on your e-bike, please read through the guidelines for component replacement for CE-marked e-bikes/pedelecs with pedal assistance.

Technical Information:

Mount:

Center Lock

Diameter:

140 mm, 160 mm, 180 mm, 203 mm

Design:

2-piece

Rotor Material:

stainless steel outer and aluminium core sandwich construction

Spider Material:

aluminium

Approved For:

Brake Compatibility:

BR-M9100*, BR-M9120, BR-M9110-R**, BR-M9000, BR-M9020, BR-M8100, BR-M8120, BR-M8110-R*, BR-M8000, BR-M8020, BR-M7100, BR-M7120, BR-M7110-R*, BR-M7000, BR-M6100, BR-M6120, BR-M6000, BR-MT520, BR-MT420, BR-M820, BR-M640, BR-U8000, BR-U8020, BR-S7000, BR-S700, BR-R9270**, BR-R9170*, BR-R8170*, BR-R8070*, BR-R7170*, BR-R7070*, BR-4770*, BR-RS805*, BR-R785*, BR-RS785*, BR-RS505*, BR-RS405*, BR-RX820-LE*, BR-RX810*, BR-RX400*

Brake Pad Compatibility:

sintered***, organic

* not compatible with 203 mm (BR-R9170-R also not compatible with 180 mm)
** only 140 and 160 mm
*** with BR-S700 and BR-S7000 only organic

Compatibility:

• for brake pads with narrow pad shape
• lockring with internal teeth: compatible with 9/10 mm quick release and 12 mm thru-axle
• for 15 mm and 20 mm thru-axles, use the SM-HB20 lockring instead

Features:

• performance indicator: Ultimate (level 3 out of 3)
• stable and versatile braking performance under the toughest conditions
• revised Ice Technologies FREEZA design for even faster heat dissipation
• heat-diffusing lacquer
• 140 and 160 mm optimal for road and cross country in terms of low weight
• 180 and 203 mm optimal for Enduro in terms of heat dissipation
• lacquered spider, polished rotor, lockring made of aluminium, anodised (internal gear teeth)

Technology:

Ice Tech FREEZA
Shimano Ice Technologies provide a fast heat dissipation at your disc brake. The brake pads are equipped with aluminium cooling fins. The brake rotor is constructed using a sandwich technique in which stainless steel encloses an aluminium core. The stainless steel on both flanks ensures long durability, the aluminium allows heat dissipation. FREEZA is the further development of the brake rotor, in which additional ribs in the aluminium provide even better heat compensation. This cooling technology creates consistently high performance and longer brake pad durability while reducing fading and brake noise.

Manufacturer Numbers:

140 mm:

I-RTMT900SS

160 mm:

I-RTMT900S

180 mm:

I-RTMT900M

203 mm:

I-RTMT900L

Contents:

• 1 x Shimano RT-MT900 brake rotor
• 1 x lockring